:root {
            --primary-color: #9c27b0;
            --secondary-color: #ff9800;
            --accent-color: #4caf50;
            --dark-color: #2e1a47;
            --light-color: #f8f9fa;
        }
        body {
            font-family: 'Segoe UI', system-ui, sans-serif;
            line-height: 1.7;
            color: #333;
            background: linear-gradient(135deg, #f5f7fa 0%, #e4e8f0 100%);
        }
        .navbar-brand {
            font-weight: 800;
            font-size: 1.8rem;
            background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.1);
        }
        .hero-section {
            background: linear-gradient(rgba(46, 26, 71, 0.85), rgba(156, 39, 176, 0.8)), url('https://via.placeholder.com/1600x900') center/cover no-repeat;
            color: white;
            padding: 5rem 0;
            border-radius: 0 0 30px 30px;
            margin-bottom: 3rem;
        }
        .section-title {
            position: relative;
            padding-bottom: 15px;
            margin-bottom: 2rem;
            color: var(--dark-color);
        }
        .section-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 80px;
            height: 4px;
            background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
            border-radius: 2px;
        }
        .content-card {
            background: white;
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.08);
            padding: 2rem;
            margin-bottom: 2rem;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            border: none;
        }
        .content-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 40px rgba(0,0,0,0.12);
        }
        .gem-icon {
            font-size: 2rem;
            margin-right: 15px;
            color: var(--primary-color);
        }
        .feature-list li {
            margin-bottom: 1rem;
            padding-left: 1rem;
            border-left: 3px solid var(--accent-color);
        }
        .nav-pills .nav-link.active {
            background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
            border: none;
            font-weight: 600;
        }
        .nav-pills .nav-link {
            color: var(--dark-color);
            font-weight: 500;
            margin-bottom: 0.5rem;
        }
        .img-fluid {
            border-radius: 12px;
            box-shadow: 0 8px 25px rgba(0,0,0,0.15);
            transition: transform 0.3s ease;
        }
        .img-fluid:hover {
            transform: scale(1.02);
        }
        .highlight-text {
            background: linear-gradient(45deg, var(--secondary-color), var(--accent-color));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            font-weight: 700;
        }
        footer {
            background: var(--dark-color);
            color: white;
            padding: 3rem 0 1.5rem;
            margin-top: 4rem;
        }
        @media (max-width: 768px) {
            .hero-section {
                padding: 3rem 0;
                border-radius: 0 0 20px 20px;
            }
            .content-card {
                padding: 1.5rem;
            }
        }